Overview of the latest small group training innovation from World Leaders Les Mills

2. GET FITTER FASTER
A LES MILLS™ High Intensity Interval Training Intervention Study
in cooperation with The Pennsylvania State University

3. Why do we care about the best way to exercise?
Because physical activity can reduce cardiovascular disease as well as
improve satisfaction with daily life.
Global health is suffering due to a lack of activity and optimal exercise
prescriptions.
More than 1.4 billion adults are currently overweight. Of these adults
500 million are obese. (World Health Organization, May 2012)
In the US more than 60% of adults are not regularly physically active.
In fact, 25% are not active at all. (Physical Activity and Health, 2011. A Report from the
US Surgeon General)

4. So what are the current guidelines for exercise?
The American College of Sports Medicine suggest the following:
Moderate intensity workouts five days per week (duration 30-60 minutes)
OR
Vigorous intensity workouts at least three days per week (20-60 minutes)
OR
A combination of the above.
These guidelines are not clear. There is an obvious gap in the current
literature with respect to exercise intensity in reducing cardiovascular
disease .

5. THE QUESTION:
Can the LES MILLS GRIT™ SERIES improve the health
and happiness of already fit adults?

6. We conducted a six week intervention to find out.
Two groups of 42 fit adults worked out five hours each week.
Group 1 – No GRIT Group 2 - GRIT
• No LES MILLS GRIT™ SERIES • 2 x 30 minute
• 3 x 60 minute cardio* LES MILLS GRIT™ SERIES
• 2 x 60 minute BODYPUMP™ • 2 x 60 minute cardio*
• 2 x 60 minute BODYPUMP™
*Cardio could be a combination of Les Mills’ BODYATTACK™,
BODYCOMBAT™, RPM™ or BODYSTEP™

7. We collected data
on blood, oxygen,
fat and strength.

8. THE RESULTS:
Oxygen Waist
Triglycerides Body Fat Back Strength
Consumption Circumference
decrease decrease increase
increase decrease
Group 1 3.1% 1.7% 0.8% 8.4% 1.0cm
No GRIT
Group 2 14.5% 6.4% 2.1% 21.9% 2.5cm
GRIT
DIFF -11.4% +4.7% -1.3% +13.5% -1.5cm

9. THE RESULTS:
Triglycerides*
decreased by 14.5%
*A type of blood fat that increases the
risk of cardiovascular disease.

10. THE RESULTS:
Oxygen Consumption
increased by 6.4%
The use and transport of oxygen is a
measure of aerobic fitness.

11. THE RESULTS:
Body Fat
decreased by 2.1%
Waist Circumference
reduced by 2.5cm

12. THE RESULTS:
Back Strength
increased by 21.9%
Leg Strength
increased by 15.7%

13. THE RESULTS:
We also recorded a change in
after study intensity when participants
heart rate during RPM intervals
returned to their regular
workouts.
The graph below shows the
heart rate of the same person
doing RPM before and after
six weeks of including
LES MILLS GRIT™ SERIES in
their training.
before study Their intensity was higher
while their perceived exertion
remained the same.

14. THE RESULTS:
LES MILLS GRIT™SERIES is high
intensity interval training.
This graph illustrates the heart
rate of the same individual
doing their own treadmill
workout compared to a
LES MILLS GRIT™SERIES workout.
The repeated high heart rate
peaks seen in this graph are
what deliver the superior
workout benefits of this type of
training.

15. LES MILLS GRIT™ SERIES
SCIENTIFICALLY PROVEN TO
BOOST YOUR HEALTH